JPS6012783Y2 - Power tiller control handle adjustment device - Google Patents

Description

[Detailed explanation of the invention] The control handle of the power tiller can be adjusted in height according to the height of the operator, the center of gravity of the machine, etc., and can be moved to the left or right depending on the work situation. It is configured.

The present invention relates to the above-mentioned control handle left-right swing adjustment device, and aims to improve the operability of the control handle when adjusted to the left or right.

To explain the structure of the embodiment shown in the figure, 1 is 1 axis 2
A wheel-shaped power tiller, 2 is a reduction gear case that also serves as a frame, 3 is a rotary tiller claw, 4 is a guide side plate, 5 is an engine, 6 is an engine cover, 7 is a resistance rod, 8 is a diagonal at the rear of the machine body 1 The handle support is made of a tube and is provided on the raised side, and the lower end is fixed to the reduction gear case 2.

A two-stage operating handle 9 is attached to the upper end of the handle support column 8.
The base of the is installed.

The details of the attachment structure of the base of the operating handle 9 to the handle support column 8 will be explained with reference to FIGS. 2 and 3.

A prismatic cylindrical swinging member 10 is fitted around the outer periphery of the upper end of the handlebar post 8, and the handlebar post 8 and the prismatic cylindrical swinging member 10 pass through both 8, 10 in the vertical direction substantially perpendicular to the handlebar post 8. They are connected by bolts 11 and nuts 12.

The prismatic cylindrical swing member 10 can swing left and right about the bolt 11 as an axis.

A bolt 13 and a nut 14 for fixing the swing adjustment position are provided at a position apart from the bolt 11, passing through the handle support column 8 and the prismatic cylindrical swing member 10 in parallel with the bolt 11.

The head 132 of the bolt 13 is formed into a grip.

The hole 15 of the cylindrical swinging member 10 through which the bolt 13 passes is formed into an arc-shaped elongated hole centered on the coupling holt 11.

At the center and both left and right ends of the elongated hole 15, there is a conical surface 13 formed under the neck of the bolt 13 and on the seat surface of the nut 14.
A dish-shaped recess 16,17 is formed which engages 1,141.

An arm piece 18 extends integrally from the nut 14, and its tip engages with a hole 19 in the upper surface of the prismatic cylindrical swinging member 10 to prevent the nut 14 from rotating.

The steering handle 9 engages the horizontal rod 93 connecting the bases of the left and right handle tubes 91 and 92 with the 0-shaped groove 20 on the rear end surface of the prismatic cylindrical swinging member 10. A bolt 2 whose base part 92 is superimposed on both left and right sides of the prismatic cylindrical swinging member 10 and passed through the handle tubes 91, 92, the prismatic cylindrical swinging member 10, and the handle support column 8 laterally.
It is attached by 1.

The bolt 21 is screwed into a screw hole 22 provided in one handle tube 92.

Further, the head 211 of the bolt 21 is provided with a lever handle 212.

The horizontal bolt through holes 23 of one handle tube 91 and the screw holes 22 of the other handle tube 92 are provided in three upper and lower positions, respectively.

There is one horizontal bolt hole 24, 25 on both left and right sides of the prismatic cylindrical swinging member 10 and one horizontal bolt hole 24, 25 on the handle strut 8, but the hole 25 on the handle strut 8 is long in the axial direction of the strut 8. There is.

The upper surface of the attachment portion of the handle support column 8 and the operating handle 9 is covered with a cover 26 attached to the handle 9 or the prismatic cylindrical swinging member 10.

The solid lines in FIGS. 1 and 2 show a state in which the control handle 9 is fixed at the center, and when the bolt 13 is unscrewed from this state and disengaged from the recesses 16 and 17 of the conical surfaces 131 and 141, the control handle 9 can be swung integrally with the rectangular tubular swinging member 10 to the left (FIG. 2) or to the right (FIG. 1) as shown by the chain line around the vertical bolt 11.

Note that the horizontal bolt 21 swings within the elongated hole 25 of the handle support column 8, so there is no interference.

When the bolt 13 is tightened with the steering handle 9 swung to the desired side, the conical surface 131 of the bolt 13 and the conical surface 141 of the nut 14 engage with the dish-shaped recesses 16 and 17, and the steering handle 9 is rotated to the desired side. is fixed in the dynamic adjustment position.

To adjust the height of the operating handle 9, remove the horizontal bolt 21 and adjust the handle 9 around the point where the horizontal rod 93 and the O-shaped groove 20 meet.
Shake the handle tube 91 and 92 up or down, and
2. Change the position of 23, insert the horizontal bolt 21, and tighten it.

Loosen the horizontal bolt 21 and pull the control handle 9 backwards,
When the horizontal rod 93 and the O-shaped groove 20 are released, the handle 9
By turning the horizontal bolt 21 downwardly, it can be folded and stored under the handle support column 8.

In this case, the base of the two-stage control handle 9 is attached to the upper end of the handle column 8 extending diagonally upward from the rear of the machine body 1 using the above structure. On the other hand, it can be easily adjusted to the left side.

Since the swing center axis 11 is inclined with respect to the vertical direction, when the handle 9 is swung to the right as shown by the chain line in FIG. 1, the right handle pipe 91 becomes lower and the left handle pipe 92 becomes higher.

If you swing it to the left, the opposite will happen.

In other words, when the handlebar 9 is adjusted by swinging to the left or right, the handlebar on the operator's side always becomes lower and the handlebar on the other side becomes higher. This has the effect of improving the operability of the handle in the swing adjustment state.

In addition, the structures for horizontal swing adjustment, height adjustment, and folding storage of the handle 9 are concentrated in one place, making it compact.
Suitable for small power tillers.

[Brief explanation of the drawing]

Figure 1 is a slope view of a small power cultivator implementing the proposed device;
FIG. 2 is a plan view of the proposed device, and FIG. 3 is a side view in longitudinal section at the center thereof. 1 is the fuselage, 8 is the handle support, 9 is the control handle, 10
11 is a vertical shaft; 13 is a tightening bolt; 1
4 is a nut, 131 and 141 are conical surfaces, 15 is a left-right swing guide elongated hole, 16 and 17 are dish-shaped recesses, and 18 is an arm piece for preventing rotation of the nut.

Claims (1)

[Scope of Claim for Utility Model Registration] In a power cultivator in which the base of a two-stage control handle 9 is attached to the upper end of a handle strut 8 extending diagonally upward from the rear of the machine body 1, the upper end of the handle strut 8 By fitting the prismatic cylindrical swinging member 10 to the outer periphery of the handlebar support 8 and the prismatic cylindrical swinging member 10 using a bolt 11 and a nut 12 that pass through the handlebar support 8 in the vertical direction and substantially perpendicular to the support 8. Square tubular swinging member 10
is capable of swinging left and right around the bolt 11, and is located at a position rearwardly away from the bolt 11 and extends parallel to the bolt 11 through the handle support column 8 and the rectangular cylindrical swing member 10 for fixing the swing adjustment position. Bolt 13. A hole 15 in the rectangular cylindrical swinging member 10 through which the bolt 13 passes is shaped into an elongated arc centered on the coupling bolt 11, and the center and both left and right ends of the elongated hole 15, the bolt 13 The anti-rotation arm piece 18 provided integrally with the nut 14 has plate-shaped recesses 16 and 17 that fit and lock the conical surfaces 131 and 141 formed under the neck of the nut 14 and on the seat surface of the nut 14. The tip is engaged with the hole 19 of the prismatic cylindrical swinging member 10, and the horizontal rod 93 connecting the bases of the left and right handle tubes 91, 92 of the operating handle 9 is inserted into the rear end surface of the prismatic cylindrical swinging member 10. 0-shaped groove 20 and each handle tube 91.
The base portions of 92 are stacked on both left and right sides of the prismatic cylindrical swinging member 10, respectively, and the operating handle 9 is fixed by the bolt 21 that passes through the handle tubes 91, 92, the prismatic cylindrical swinging member 10, and the handle support column 8 laterally. Attached to the prismatic cylindrical swinging member 10,
The horizontal bolt through hole 25 of the handle strut 8 is shaped to be long and extends in the axial direction of the handle strut 8, and the horizontal bolt through hole 23 of one handle tube 91 and the bolt screwing hole 22 of the other handle tube 92 are formed respectively. A power tiller control handle adjustment device with several upper and lower handles.